26 This calculation of Mr and Mrs George's contribution is based upon the following: half of the wall needs to be repaired, and Mr Galasso agreed at the hearing that such repair was possible, and hence the quote of $8,114 should be halved. We also determined that it would be reasonable to halve this amount for Mr and Mrs George's contribution to the repair of the wall as it was not built adequately to retain the higher ground and because the wall is more than 20 year sold. Thus, the final cost is to be one quarter of the original estimate of $8,114 amounting to $2029.50. Since there was only a single quotation for the repairs, we have rounded that figure to $2000 as the maximum that Mr George will be required to pay.
Conclusion
27 We find that the trees located on 74 Redmyre Road, Strathfield have caused damage to the wall and that the damage is likely to continue and to render the wall unsafe unless repair works are undertaken.